TPR handle, non-slip, comfortable grip. Very effective for improving hand, wrist, finger and forearm speed, strength and endurance. Great. For recovery and rehabilitation aid for arthritis, carpal tunnel, rheumatoid arthritis, tendonitis, tennis elbow, wrist sprains and finger or hand fractures. Ergonomic and ambidextrous design makes it suitable for unisex, seniors, teenagers and young adults, for example, also for children of different ages. Great for anyone who wants to improve hand strength. 1 This wrist exerciser is designed to improve wrist, finger and forearm strength and power. And speed, it is ideal for athletes, musicians, rock climbers, golfers and tennis players. 2 Made of high-quality spring steel and nylon material, it is sturdy and durable with a long service life. 2 > 3 High elastic spring, super flexible, high bending, never break, deform. 4 Plastic is the main material that affects grip performance. The use of plastic has better sealing performance, higher pressure resistance and is safer to use. 5 Grip strengthener exercises can reduce fatigue, strengthen the muscles of the practitioners, promote blood circulation, maintain blood circulation in the joints. , and are not easy to get inflamed. 6 This arm trainer is lightweight and easy to carry to the gym, office or home. 7 The handle is ergonomic, non-slip and safe. 8 Great for strength training, flexibility and balance combined with a variety of exercise programs. 9 Helps improve your athletic flexibility and can be adjusted for different hand sizes and shapes. Dimensions: 16x12.5x3.5cm